Modeling the detection efficiency of an HP-Ge detector for use in boron neutron capture therapy

Satoshi Nakamura; Akihisa Wakita; Masashi Ito; Hiroyuki Okamoto; Shie Nishioka; Kotaro Iijima; Kazuma Kobayashi; Teiji Nishio; Hiroshi Igaki; Jun Itami

doi:10.1016/j.apradiso.2017.03.027

Modeling the detection efficiency of an HP-Ge detector for use in boron neutron capture therapy

Appl Radiat Isot. 2017 Jul:125:80-85. doi: 10.1016/j.apradiso.2017.03.027. Epub 2017 Apr 2.

Authors

Affiliations

¹ Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan. Electronic address: satonaka@ncc.go.jp.
² Department of Radiation Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
³ Department of Medical Physics, Graduate School of Medicine, Tokyo Women's University, 8-1 Kawada-cho, shinjuku-ku, Tokyo 162-8666, Japan.

PMID: 28414991
DOI: 10.1016/j.apradiso.2017.03.027

Abstract

The multi-foil method is commonly used to determine upon an energy spectrum of neutrons in boron neutron capture therapy. The method requires to measure the radioactivation of the foils. This study develops a simple modeling procedure of a high-purity Ge detector, which is used to measure the radioactivation, in order to calculate the detection efficiency with GEANT4. By changing four parameters from their manufacturing specifications of the detector, the simulated detection efficiency is able to reproduce the actual detection efficiency.

Keywords: BNCT; Detection efficiency; HP-Ge detector; Modeling procedure; Multi-foil method.